Crassula helmsii
Crassula helmsii
(swamp stonecrop)
Plants
Exotic

Impact ID10010
Impact TypeCompetition
Study TypeObservational
Study LocationLaboratory
Impact DescriptionIn a laboratory experiment, Crassula helmsii became dominant over Littorella uniflora in waterlogged conditions on buffered fen soils.
Reference45518
Great Lakes RegionNo
Cost 
LocationNetherlands

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Citation information: U.S. Geological Survey. [2026]. Nonindigenous Aquatic Species Database. Gainesville, Florida. Accessed [1/13/2026].

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